def install_import_hook():
original_importer = builtins.__import__
def importer(*args, **kwargs):
m = original_importer(*args, **kwargs)
if module_eligible(m) and not pyfence.options['off']:
debug('Importing %s' % (m.__name__))
fence_namespace(m)
return m
builtins.__import__ = importer
debug('Import hook installed')
def fence_namespace(m, stack=None, fqn=None):
"""
Fences contents of namespace (module or class)
:param m: namespace
:param fqn: fully qualified name
"""
if hasattr(m, FENCE_TAG):
return
if hasattr(m, '__module__'):
if not module_eligible(m.__module__):
return
try:
setattr(m, FENCE_TAG, True)
except TypeError:
pass
stack = stack or []
if not stack:
fqn = m.__name__
debug('Processing %s (%s)' % (fqn, m))
for key in m.__dict__:
if key.startswith('__') and key.endswith('__'):
continue
if not hasattr(m, key):
continue
if hasattr(m, '__dict__'):
value = m.__dict__[key]
else:
value = getattr(m, key)
if hasattr(value, '__module__'):
if not module_eligible(value.__module__):
continue
if value in stack:
continue
if type(value) in [types.ClassType, types.TypeType]:
fence_namespace(value, stack + [value], fqn + '.' + value.__name__)
if type(value) in [types.MethodType, types.FunctionType]:
fenced = fence_function(value, parent=m, fqn=fqn+'.'+value.__name__)
if fenced is not None:
setattr(m, key, fenced)
def importer(*args, **kwargs):
m = original_importer(*args, **kwargs)
if module_eligible(m) and not pyfence.options['off']:
debug('Importing %s' % (m.__name__))
fence_namespace(m)
return m